/*
 * @Author: c
 * @Date: 2023-12-12 21:42:23
 * @LastEditTime: 2024-01-03 01:12:50
 * @LastEditors: c
 * @Description: 转换响应数据
 * @FilePath: \music-web-backend\src\common\interceptors\transform.interceptor.ts
 * https://github.com/OBKoro1/koro1FileHeader/wiki/%E9%85%8D%E7%BD%AE
 */
// Copyright 2023 Administrator
// 
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// 
//     http://www.apache.org/licenses/LICENSE-2.0
// 
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

import { Injectable, NestInterceptor, ExecutionContext, CallHandler } from '@nestjs/common';
import { Observable } from 'rxjs';
import { map } from 'rxjs/operators';

export interface Response<T> {
    data: T;
}

@Injectable()
export class TransformInterceptor<T> implements NestInterceptor<T, Response<T>> {
    intercept(context: ExecutionContext, next: CallHandler): Observable<Response<T>> {

        //转换返回的数据结构
        return next.handle().pipe(map(data => ({ data, code: 0, success: true })));
    }
}
